The 39-year-old author of The Skinnygirl Dish is pregnant with her first child. Earlier this week, she tweeted: "The bright side: I'm getting married in 2 days and housing a pint of ice cream. No need for flat belly at this wedding!"

According to People, the wedding will be filmed for Bethenny's upcoming "Real Housewives" spin-off, "Bethenny's Getting Married," which will air on Bravo. The magazine also cites a source that says only two of her "Housewives" co-stars will attend: Alex McCord and Ramona Singer.